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Finding the Fourth Proportional to 48,570.76, 72,797.76 and 20,479.96

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Solution

The fourth proportional to 48,570.76, 72,797.76 and 20,479.96 is: 30,695.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,570.76 : 72,797.76 = 20,479.96 : x
  2. Step 2: Convert to fraction form
    48,570.76/72,797.76 = 20,479.96/x
  3. Step 3: Cross multiply
    48,570.76x = 72,797.76 × 20,479.96
  4. Step 4: Simplify right side
    48,570.76x = 1,490,895,212.89
  5. Step 5: Solve for x
    x = 1,490,895,212.89/48,570.76
  6. Step 6: Final answer
    x = 30,695.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.